CVE-2025-22037

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.

• CWE-476

• https://git.kernel.org/stable/c/2d3461d6ae74ebdcd4d65128c855198649bcadcd
• https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4dPatch
• https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335Patch
• https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780Patch
• https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5adPatch
• https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6Patch
• https://www.zerodayinitiative.com/advisories/ZDI-25-310/Third Party Advisory

Published

Apr 16, 2025

Last Modified

Oct 30, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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